LOL!...i think anime characters are asian...it's just that they dyed their hair that color...or the artist just wanted to be that color..Asian skin is really pale and light like how the way the color it..so majority of the time..it's asian...u can tell the difference between white, black , asian character...so that's what i think.

anime characters look like all types of race, they can look asian, caucasian, african, hispanic, whatever
it actually depends on the artist's style
i don't like the style that makes everyone look the same, i like the ones that are diverse, which you can actually tell who's who, that includes who is male or female
it mainly depends on how the eyes are drawn
the color of hair can simply be explained through the story, or simply people dying their hair
skin color depends on where they come from